COVID-19 vaccine coverage among Harford County residents in Maryland

(Page updated at 2021-11-01 21:08:07)
Data from Maryland Department of Health, as of 2021-11-02. See Annex for detailed note about the data.

0. Coverage: booster

0.1. Number of people eligible for booster

As of October 24, 2021,

FDA authorization
“The use of a single booster dose of the Jansen (Johnson and Johnson) COVID-19 Vaccine may be administered at least 2 months after completion of the single-dose primary regimen to individuals 18 years of age and older.”

CDC’s guidelines:
“For individuals who received a Pfizer-BioNTech or Moderna COVID-19 vaccine, the following groups are eligible for a booster shot at 6 months or more after their initial series: - 65 years and older
- Age 18+ who live in long-term care settings
- Age 18+ who have underlying medical conditions
- Age 18+ who work or live in high-risk settings”

As of 2021-11-02, 42179 county residents are officially eligible for the booster shot - simply based on the type and timing of vaccines they received earlier. Below figure shows projected number of people who would have become eligible for a booster based on their age and manufacture of their first vaccine (6 months after their second shot for PFR and MOD; and 2 months after their first shot for JSN).

0.2. What is the weekly pace of booster shot vaccination?

Using the Immunet data, a booster shot is defined using the following.
- 3rd or higher order shot for those who received PFR/MOD vaccines for their first shot AND the interval is 120 days or longer from the previous shot.
- 2nd or higher order shot for those who received JSN vaccines for their first shot AND the interval is 60 days or longer from the previous shot.

See Annex 2 for more about how to define a booster shot

As of 2021-11-02, a total of 16438 “booster” shots were given.
* In the last 7 days, 5850 booster shots were provided, compared to 2915 in the week before.

0.2.1. Weekly number of booster shots

Trend of booster shots by eligibility status - simply based on the age and manufacturer of their initial shot.

0.2.2. Weekly number of booster shots by time since previous shot

0.2.3. Weekly number of booster shots by age group

Majority of them were given to people 60 and older, there are younger people who also preemptively got booster shot(s).

0.2.4. Weekly number of booster shots by type of place

Pharmacies are main source for booster shots. In the last two weeks, there were 8765 booster shots were provided, 90% among them were given at pharmacies and 0% were given at hospitals.

0.2.5. Weekly number of booster shots by manufacturer of the booster shot

0.3. Among those who are eligible, who is getting the booster shot?

* Simply based on the age, type and date of the initial shot, a total of 10283 shots were given to people who were eligible to receive a booster. This is 24 % of the total 42179 eligible people for booster to date.
* Booster rate varies by background characteristics:

The breakdown by both manufacturer and race suggests that booster rates are lower among Hispanic and Black groups.

Percent of eligible people for booster who received one: by background
Group Group.label Number of eligible people for booster Percent of eligible people who received booster
First dose type/brand JSN 13058 7
MOD 16252 23
PFR 12869 48
Race Hispanic 1050 14
NH Asian 769 26
NH Black 3341 21
NH White 31112 27
First dose type/brand x Race JSN Hispanic 636 5
JSN NH Asian 238 9
JSN NH Black 1312 6
JSN NH White 9104 8
MOD Hispanic 252 21
MOD NH Asian 306 21
MOD NH Black 1035 22
MOD NH White 12603 24
PFR Hispanic 162 43
PFR NH Asian 225 51
PFR NH Black 994 42
PFR NH White 9405 51
Age 10-19 421 2
20-29 1619 3
30-39 1927 6
40-49 2086 7
50-59 3036 7
60-69 11644 30
70-79 14654 35
80-89 6792 26

0.4. Booster shots in the context of all shots

1. Coverage: first dose

1.0. Cumulative coverage among population 18 or older

As of 2021-11-02, 75.8% of Harford county residents 18 or older received one or more dose.

Cumulative percent of population 18 or older who received the first and full dose

1.1. What is the weekly pace of county residents getting first vaccination?

1.2. Where do county residents receive their first shot?

1.2A. In what type of facilities have county residents been vaccinated for their first shot?

Weekly number of first vaccination by site: HCHD, MassVax, pharmacies, and other

1.2A.1. Among 18 and younger, in what type of facilities have they been vaccinated for their first shot?

Weekly number of vaccination by site: HCHD, MassVax, pharmacies, Pediatric Partner and other

1.2B. In what counties have county residents been vaccinated for their first shot? How far have they traveled?

1.3. Weekly trend by age and race

FYI, please see “1.2. Population pyramid, Harford County” here to see age-and-race distribution.

1.3.1. Weekly trend by age - among all race/ethnicity: how does the the pace and timing of getting first vaccination differ by age?

1.3.2. Weekly trend by race - among all ages: how does the the pace and timing of getting first vaccination differ by race?

1.3.2A. Weekly trend by race - by age group: does the the pace and timing of getting first vaccination differ by race in each age group?

1.4. Who are coming for their first shot?

1.4.1. Weekly distribution by age group

2. Coverage: cumulative first dose

2.1. What is the latest cumulative coverage among county residents: total and by demographic group?

COVID-19 vaccine coverage, one or more doses (number of people and percent of population): cumulative and past 7 days
group population Number of people received first dose, cumulative Percent of population, cumulative Number of people received first dose, last 7 days Percent of population, last 7 days
Total 255441 162803 64 579 0.2
Non-Hispanic White 191831 108002 56 364 0.2
Non-Hispanic Black 36457 18893 52 64 0.2
Non-Hispanic Asian 7711 5039 65 16 0.2
Hispanic 12215 6757 55 44 0.4
Female 130315 87726 67 281 0.2
Male 125126 74979 60 298 0.2
75+ 17157 15443 90 57 0.3
65-74 25136 23618 94 72 0.3
40-64 87000 66667 77 216 0.2
20-39 63761 40895 64 200 0.3
18-19 5782 4115 71 5 0.1
16-17 6883 4294 62 4 0.1
12-15 13412 7750 58 25 0.2
5-11 21915 18 0 0 0.0
White 65+ 36587 29382 80 100 0.3
Black 65+ 3634 2904 80 6 0.2
Asian 65+ 1026 728 71 3 0.3
Hispanic 65+ 693 639 92 6 0.9
White 40-64 67512 43383 64 125 0.2
Black 40-64 12053 8105 67 24 0.2
Asian 40-64 2876 1990 69 7 0.2
Hispanic 40-64 3300 2575 78 17 0.5
White 20-39 45938 25951 56 123 0.3
Black 20-39 10079 5150 51 26 0.3
Asian 20-39 1984 1520 77 5 0.3
Hispanic 20-39 3889 2452 63 15 0.4

2.2. What is the latest cumulative coverage among county residents: by race, age, and sex?

Note: Percent value may exceed 100, if the population estimate is out dated and/or underestimated.

Cumulative percent of population who received the first dose - by race, age, and sex

3. Coverage: cumulative by vaccination status

3.1. What is the latest cumulative coverage among county residents by vaccination status: total and by demographic group?

3.1A. Number of vaccinations

COVID-19 vaccine coverage by status (number of people): complete, waiting adequate (<28 days), waiting late (28-41 days), vs. late
group population Total (number of people received one or more doses) Complete Waiting (<28 days) Waiting (28-41 days) Late (42+ days)
Total 255441 162803 151035 2704 748 8130
Total, 12+ 219131 162782 151020 2703 748 8127
Total, 18+ 198836 150738 139870 2464 703 7522
Total, 65+ 42293 39061 36210 560 276 1973
Non-Hispanic White 191831 108002 101292 1512 432 4634
Non-Hispanic Black 36457 18893 17301 418 105 1053
Non-Hispanic Asian 7711 5039 4738 68 14 213
Hispanic 12215 6757 6115 164 30 444
Female 130315 87726 81717 1355 356 4188
Male 125126 74979 69235 1348 391 3930
75+ 17157 15443 14166 220 108 931
65-74 25136 23618 22044 340 168 1042
40-64 87000 66667 62589 908 214 2873
20-39 63761 40895 37301 958 204 2385
18-19 5782 4115 3770 38 9 291
16-17 6883 4294 3986 60 14 233
12-15 13412 7750 7164 179 31 372
5-11 21915 18 15 1 0 2
White 65+ 36587 29382 27503 368 176 1304
Black 65+ 3634 2904 2717 43 17 124
Asian 65+ 1026 728 667 11 6 43
Hispanic 65+ 693 639 570 21 7 41
White 40-64 67512 43383 41142 518 120 1548
Black 40-64 12053 8105 7529 127 29 411
Asian 40-64 2876 1990 1877 20 7 82
Hispanic 40-64 3300 2575 2391 43 8 131
White 20-39 45938 25951 24014 499 106 1296
Black 20-39 10079 5150 4579 172 44 351
Asian 20-39 1984 1520 1423 30 1 65
Hispanic 20-39 3889 2452 2172 79 11 188
HCHD NA 0 0 0 0 0

Note:
1. Complete: either two doses of Moderna or Pfizer, or one dose of J&J vaccine
2. Sum of the number of complete, waiting1, waiting2, and late may not be same with the total number of people, due to a small Number of vaccinations with missing information on manufacture and/or vaccination date.
3. The number of complete in the table is potentially under-counted, but only slightly. See Annex.

3.1B. Percent of population vaccinated

COVID-19 vaccine coverage by status (percent of population): any, complete, waiting adequate (<28 days), waiting late (28-41 days), vs. late
group population One or more doses (%) Complete doses (%) Waiting (<28 days) (%) Waiting (28-41 days) (%) Late (42+ days) (%)
Total 255441 64 59 1 0 3.2
Total, 12+ 219131 74 69 1 0 3.7
Total, 18+ 198836 76 70 1 0 3.8
Total, 65+ 42293 92 86 1 1 4.7
Non-Hispanic White 191831 56 53 1 0 2.4
Non-Hispanic Black 36457 52 47 1 0 2.9
Non-Hispanic Asian 7711 65 61 1 0 2.8
Hispanic 12215 55 50 1 0 3.6
Female 130315 67 63 1 0 3.2
Male 125126 60 55 1 0 3.1
75+ 17157 90 83 1 1 5.4
65-74 25136 94 88 1 1 4.1
40-64 87000 77 72 1 0 3.3
20-39 63761 64 59 2 0 3.7
18-19 5782 71 65 1 0 5.0
16-17 6883 62 58 1 0 3.4
12-15 13412 58 53 1 0 2.8
5-11 21915 0 0 0 0 0.0
White 65+ 36587 80 75 1 0 3.6
Black 65+ 3634 80 75 1 0 3.4
Asian 65+ 1026 71 65 1 1 4.2
Hispanic 65+ 693 92 82 3 1 5.9
White 40-64 67512 64 61 1 0 2.3
Black 40-64 12053 67 62 1 0 3.4
Asian 40-64 2876 69 65 1 0 2.9
Hispanic 40-64 3300 78 72 1 0 4.0
White 20-39 45938 56 52 1 0 2.8
Black 20-39 10079 51 45 2 0 3.5
Asian 20-39 1984 77 72 2 0 3.3
Hispanic 20-39 3889 63 56 2 0 4.8
HCHD NA NA NA NA NA NA

Note:
1. Complete: either two doses of Moderna or Pfizer, or one dose of J&J vaccine 2. The percent of complete in the table is potentially underestimated, but only very slightly. See Annex about potential errors in identifying unique person in the Immunet system.

3.2. What are weekly pace of coverage by vaccination status: first dose vs. second dose?

5. Latest cumulative coverage by zipcode

5.1. First dose

COVID-19 vaccine coverage by zip code (one ore more doses): Harford County

COVID-19 vaccine coverage, one or more doses by zip code (number of people and percent of population): cumulative and past 7 days
Zip code Population Number of people, cumulative Percent of population, cumulative Number of people, last 7 days Percent of population, last 7 days
21001 24752 14850 60 68 0.3
21005 2872 736 26 3 0.1
21009 29905 20057 67 83 0.3
21013 1487 624 42 NA NA
21014 36538 26359 72 91 0.2
21015 29199 21100 72 67 0.2
21017 6983 3940 56 13 0.2
21028 2783 2075 75 8 0.3
21034 3483 1872 54 8 0.2
21040 24166 13146 54 59 0.2
21047 12266 9225 75 18 0.1
21050 18123 12705 70 36 0.2
21078 18366 12588 69 54 0.3
21082 49 13 27 NA NA
21084 7603 4801 63 19 0.2
21085 16055 10758 67 31 0.2
21087 813 351 43 NA NA
21111 936 328 35 NA NA
21132 3232 1443 45 4 0.1
21154 5804 3539 61 9 0.2
21160 2933 1197 41 7 0.2
21161 2761 924 33 NA NA

Note:
1. See annex for information about the population by ZCTAs.

5.2 Complete doses

COVID-19 vaccine coverage by zip code (complete): Harford County Note:
1. Complete: either two doses of Moderna or Pfizer, or one dose of J&J vaccine

COVID-19 vaccine coverage, complete by zip code (number of people and percent of population): cumulative and past 7 days
Zip code Population Number of people, cumulative Percent of population, cumulative Number of people, last 7 days Percent of population, last 7 days
21001 24752 13596 55 4 0
21005 2872 637 22 NA NA
21009 29905 18684 62 8 0
21013 1487 551 37 NA NA
21014 36538 24585 67 13 0
21015 29199 19759 68 9 0
21017 6983 3629 52 1 0
21028 2783 1927 69 1 0
21034 3483 1731 50 1 0
21040 24166 11893 49 9 0
21047 12266 8679 71 1 0
21050 18123 11949 66 4 0
21078 18366 11634 63 9 0
21082 49 13 27 NA NA
21084 7603 4511 59 1 0
21085 16055 9976 62 6 0
21087 813 307 38 NA NA
21111 936 267 29 NA NA
21132 3232 1344 42 1 0
21154 5804 3296 57 2 0
21160 2933 1115 38 1 0
21161 2761 802 29 NA NA

Note:
1. Complete: either two doses of Moderna or Pfizer, or one dose of J&J vaccine.
2. See annex for information about the population by ZCTAs.


Annex 1: Description of the data

Population data
- Population (total and by age and race) come from 2019 population estimates in “County Population by Characteristics: 2010-2019”: https://www.census.gov/data/tables/time-series/demo/popest/2010s-counties-detail.html.
- Population by ZCTAs come from the county government, including adjusted population in five double-county areas.

Vaccination data - The data are at the vaccination case-level, and include vaccinations either administered in Harford County (regardless of residence of people) or vaccinations of Harford County residents (regardless of place of administration). As of May 3, 2021, the daily data include only vaccinations on March 1 or later. Thus, older vaccinations are from the previous update on April 30, 2021.
- There are a total of 377566 vaccinations administered to 198604 people.
- A total of 64725 vaccinations were administered at the HCHD clinic, regardless of clients’ county of residence. 83% of vaccinations were for the county residents.
- A majority of vaccinations (84%) are for the county residents: 318079 vaccinations administered to 162803 people, including 160391 people living in the 17 zip code areas. All analysis in this site is restricted to the county residents.
- 42% of vaccinations for the county residents occur outside the county.
- Vaccination date ranges from 2020-12-16 to 2021-10-31.
- Age is age as of January 14, 2021, to avoid rolling changes in denominators.

Data quality check: Number of vaccinations with missing entry or likely errors
- Missing age:7
- Missing sex:0
- Missing race or ethnicity:0
- Likely errors in vaccine date-person link (i.e., total number of vaccinations >= 3): 16857
- Likely errors in vaccine date (i.e., vaccine date < 12/14/2020): 3
- Likely errors in giving unique CLIENT_ID (i.e., very likely one person getting two ID, based on DOB, sex, last name, and street address): 382


Annex 2: How to define a booster shot from the Immunet data

Given the number of vaccinations per person in the dataset (see the first table below) and even some variation in the type of vaccines within a person (see the second tabulation), it is not necessary straight forward to identify a (new) booster shot.

Number of vaccines received per person

totalnumber Freq %
1 24384 14.98
2 121956 74.91
3 16111 9.90
4 312 0.19
5 38 0.023
6 2 0.0012
Total 162803 100.00

Generated by summarytools 1.0.0 (R version 4.1.1)
2021-11-01

Among people who received 2+ doses, receiving same/different BRAND vaccines

brand
type different
BRAND
vaccines
same BRAND
vaccines
<NA>
different TYPE vaccines (mRNA+JSN) 812 0 0
same TYPE vaccines (mRNA) 617 136885 0
<NA> 0 0 105

Generated by summarytools 1.0.0 (R version 4.1.1)
2021-11-01

Since data errors are relatively rare, we will use a simple rule to define one:

  • 3rd or higher order shot for those who received PFR/MOD vaccines for their first shot AND the interval is 120 days or longer from the previous shot.
  • 2nd or higher order shot for those who received JSN vaccines for their first shot AND the interval is 60 days or longer from the previous shot.

Distribution of “booster shots” by dose number/order in each person

booster
dosenumber FALSE TRUE
1 162803 0
2 137491 923
3 1047 15412
4 282 67
5 2 36
6 2 0

Generated by summarytools 1.0.0 (R version 4.1.1)
2021-11-01

Distribution of “booster shots” by the number of months since the previous shot

booster
timebooster FALSE TRUE
137239 0
2 months 430 21
3 months 342 15
4 months 126 410
5 months 104 790
6 months 161 6800
7 months 242 5075
8+ months 178 3327
<NA> 162805 0

Generated by summarytools 1.0.0 (R version 4.1.1)
2021-11-01

Distribution of “booster shots” by the number of months since the previous shot and manufacturer of the first shot

MANUFACTURER_first
timebooster JSN MOD PFR
2 months 21 0 0
3 months 15 0 0
4 months 20 226 164
5 months 39 370 381
6 months 452 1771 4577
7 months 383 2008 2684
8+ months 1 1416 1910

Generated by summarytools 1.0.0 (R version 4.1.1)
2021-11-01


See GitHub for data, code, and more information. For typos, errors, and questions, contact me at www.isquared.global.

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